Digital Commons Network^™

Engagement And Meaningfulness As Determinants Of Employee Retention: A Longitudinal Case Study, Calvin Williams

USF Tampa Graduate Theses and Dissertations

The lack of financial resources has long challenged government institutions to move employee wages toward the market rate average for hourly and salaried positions. This area of public employment, where motivation other than a pay increase is necessary due to constrained budgets, is not well studied or understood. The primary purpose of this longitudinal case study is to investigate factors that influence Administrative Service employees and increase their level of retention at the University of South Florida (USF), a state funded university. The objective of the case study was to better understand how enhanced psychological meaningfulness, and increased employee engagement …

Principal Preparation For The Bahamas: A Partnership Approach, Raquel R. Edgecombe

USF Tampa Graduate Theses and Dissertations

Current literature has investigated university-district partnerships in numerous ways; however, based on a review of the literature, no study has sought the insights of potential partners about the partnership arrangement prior to the start of the partnership agreement. The purpose of this study was to explore educational leadership practitioners’ understandings of partnership in principal preparation. This inquiry was guided by the following research questions: (a) How do educational stakeholders perceive the ideal partnership arrangement for the preparation of principals; and (b) In what ways do the perspectives of educational stakeholders reflect broader discourse about the quality of educational leadership preparation? …

Exercise Prescription Practices In University Counseling Centers: Testing The Information-Motivation-Behavioral Skills Model, A'Naja M. Newsome

USF Tampa Graduate Theses and Dissertations

The co-occurence of physical inactivity and poor mental health in the college student population can lead to chronic health issues that have negative short-term (e.g., academic success and weight gain) and long-term (e.g., obesity, serious mental illness, and premature mortality) impacts. Integrating exercise prescription into the mental health treatment plan of college students could enhance the holistic care model described by The American College Health Association (ACHA) and Healthy Campus task force. Understanding the knowledge, attitudes, and skills that mental health professionals (MHPs) hold regarding exercise prescription is important for policy formation and program development for college student health. The …

The Relationship Between Motivation And Professional Learning For Teachers In Makkah, Saudi Arabia, Yassir Alzahrani

USF Tampa Graduate Theses and Dissertations

Even though, there are many studies on teacher professional learning and many studies on teacher motivation, there is a lack of research to examine the relationship between teacher professional learning and motivation. This study examined the relationship between teacher motivation and professional learning in Makkah, Saudi Arabia.

This study was conducted using two instruments. The first instrument was the Education Participation Scale (EPS) originally developed by Boshier (1991). However, the researcher used the most recent version of EPS by Richter et al. (2019). The EPS determines what factors most motivate teachers to participate in professional development. These factors are personal …

A System Architecture For Water Distribution Networks, Noha Abdel-Mottaleb

USF Tampa Graduate Theses and Dissertations

This dissertation examines structure-function relationships of water distribution networks (WDNs), with focus on improving the decision-making process for water utilities. WDNs are lifeline infrastructure systems, necessary for the functioning of cities. Yet water utilities around the world struggle with emerging challenges that include but are not limited to aging infrastructure components, limited budgets, increased interdependencies between infrastructure systems, increased rates of urbanization, and increasing extreme weather conditions. This is why enhancing the performance of WDNs is a priority for water utilities around the world. This research begins to delineate a system architecture for WDNs and evaluates the use of various …

Effectiveness Of An Early Literacy Intervention For Increasing Teen Parents' Child-Directed Speech And Conversational Turns, Deborah H. Christie

USF Tampa Graduate Theses and Dissertations

Children’s language ability upon entry to kindergarten is a powerful predictor of reading achievement throughout elementary school; yet disparities in children’s language growth have been detected as early as 18 months of age. These disparities have been linked to the quantity and quality of speech provided to children as they are learning to talk. The current study employed a single-case multiple-baseline across participants experimental design to evaluate the effectiveness of an early literacy intervention to increase teen parents’ child-directed speech and conversational turns. The intervention was delivered one-on-one via videoconferencing by a teen parent peer coach. Participants included teen parents …

Exploration Of Post-Merger Integration Meetings, Through A Qualitative Study Of Individuals’ Perceptions, Ruben Cintron

USF Tampa Graduate Theses and Dissertations

In 2020, the United Sates mergers and acquisitions (M&As) had a total value of $1.2 trillion. Organizations engage in M&As for a variety of reasons, such as to gain economies of scale and scope, obtain technologies, enter new markets, or gain competitive advantage by eliminating competitors or combining forces. However, studies indicate that less than half achieve their stated strategic and financial goals. Two factors cited within the M&A literature that contribute to the failure rate are cultural clashes and post-merger integration activities. This three-paper dissertation explores the influence organizational cultures and post-merger integration activity (post-merger meetings) may have on …

Metastatic Mat Phenotype Driven By Noncanonical Epha2 Signaling In Melanoma, Chao Zhang

USF Tampa Graduate Theses and Dissertations

Acquired BRAF/MAPK/extracellular signal‒regulated kinase inhibitor resistance in melanoma results in a new transcriptional state associated with an increased risk of metastasis. In this study, we identified noncanonical ephrin receptor (Eph) EphA2 signaling as a driver of the resistance-associated metastatic state. We used mass spectrometry‒based proteomic and phenotypic assays to demonstrate that the expression of active noncanonical EphA2-S897E in melanoma cells led to a mesenchymal-to-amoeboid transition driven by Cdc42 activation. The induction of mesenchymal-to-amoeboid transition promoted melanoma cell invasion, survival under shear stress, adhesion to endothelial cells under continuous-flow conditions, increased permeability of endothelial cell monolayers, and stimulated melanoma transendothelial cell …

Ecology And Diversity Of Boletes Of The Southeastern United States, Arian Farid

USF Tampa Graduate Theses and Dissertations

The boletes are conspicuous stipito-pileate macrofungi that are generally defined by their tubulose hymenophores. Molecular phylogenetic analyses have informed extensive taxonomic revisions across the boletes. Despite this, the boletes in the southeastern USA have been largely absent from the literature. This dissertation seeks to understand the microbiome inhabiting the tuberculate ectomycorrhizae of the bolete Hemileccinum rubropunctum, and addresses taxonomic revisions of boletes found in the Boletaceae and Suillaceae. The introduction provides a brief background on boletes, as well as our understanding of tuberculate ectomycorrhizae. The second chapter seeks to understand the composition of the microbiome tuberculate ectomycorrhizae of H. rubropunctum …

Understanding Player And Clinician Perspectives On The Impact Of Problematic Gaming Behaviors In The United States, Amanda N. Weston

USF Tampa Graduate Theses and Dissertations

Due to the evolution of technology and increased use of video games, the need to understand how gaming affects individuals is imperative to assisting with those who struggle with problematic gaming behaviors. Video gaming has shown to have significant benefits including an increase in cognitive abilities, a way to relieve stress, and mood enhancement. However, problematic gaming behaviors (PGB) (i.e., uncontrollable gaming behaviors that impair functioning) may cause significant short and long-term problems that impact gamers throughout the lifespan if left untreated. There are critical gaps in the literature regarding how gaming impacts player functioning and how clinicians are managing …

Advice As Metadiscourse: On The Gendering Of Women's Leadership In Advice-Giving Practices, Amaly Santiago

USF Tampa Graduate Theses and Dissertations

This dissertation is about advice as social practice. Specifically, I examine leadership discourse as communicatively constituted and advice-giving as creating a metadiscourse of gendered abilities and leadership asymmetries. In the light of the growing number of initiatives created for women to improve their status as leaders, this project examines leadership, not as a quality, but as discourse: as a communicative dynamic. This is in line with how organizations see leadership when they create leadership programs, for these programs are designed to advise or teach women to be different and better leaders. My purpose is to encourage inclusiveness and contribute to …

Gamifying The Crew: Effects Of Collaborative Responsive Writing Using Gamification, In Interactive Web-Based E-Books, On L2 International Students’ Motivation And Academic Vocabulary Achievement, Rabea M. Alfahad

USF Tampa Graduate Theses and Dissertations

International students usually find it challenging to adapt to English academic vocabulary (Park, 2019). The literature is interspersed with the use of a variety of technologies and technological tools to augment the knowledge of language learners regarding English academic vocabulary (Flemban, 2018). However, in this dissertation, interactive web-based e-books and two strategies to teach English academic vocabulary (gamification and collaborative responsive writing) is employed. Gamification is applying game mechanics in non-game related contexts (Groh, 2012). This study investigated the impact of these two strategies on the participants’ academic vocabulary achievement and motivation level. In so doing, interactive web-based e-books are …

An Evaluation Of Student Participation In The Student Alumni Association Program At The University Of South Florida, Latoya Wider

USF Tampa Graduate Theses and Dissertations

This paper is an evaluation of undergraduate college students’ participation in the Student Alumni Association (SAA) at the University of South Florida. I evaluated benefits of participating in the program, why students do not participate in the program, and if participation affected students’ persistence through college. Undergraduate students and alumni who are or once were members of the SAA participated in focus groups and interviews to evaluate their involvement in the program. Questions addressed benefits of being involved in SAA, why students do not participate in SAA, and factors that contribute to students’ involvement or lack of participation in SAA. …

Human-Centric Cybersecurity Research: From Trapping The Bad Guys To Helping The Good Ones, Armin Ziaie Tabari

USF Tampa Graduate Theses and Dissertations

The issue of cybersecurity has become much more prevalent over the last few years, with a number of widely publicised incidents, hacking attempts, and data breaches reaching the news. There is no sign of an abatement in the number of cyber incidents, and it would be wise to reconsider the way cybersecurity is viewed and whether a mindset shift is necessary. Cybersecurity, in general, can be seen as primarily a human problem, and it is for this reason that it requires human solutions and tradeoffs. In order to study this problem, using two perspectives; that of the adversaries and that …

Narratives Of Success: How Honors College Newcomers Frame The Entrance To College, Cayla Lanier

USF Tampa Graduate Theses and Dissertations

Starting college marks an important period of transition for young people, as they manage multiple changes at once and begin to establish identities independent from their parents. The first year college student experience has been the focus of a great deal of academic research, as scholars and practitioners seek to discover the best way to support students and ensure they remain successfully enrolled at the university. However, very little of this research attends to the specific experiences of Honors College students. Further, a focus on the communicative process of transitioning, or organizational socialization, may add to what is currently known. …

Machine Learning For Species Habitat Analysis, Abigail Lavallin

USF Tampa Graduate Theses and Dissertations

Management and conservation initiatives will always be controlled by finite resources, whether financialor temporal. Understanding a species’ spatial ecology, and how its requirements vary across habitats and locations is key to a successful species management plan. During recent decades, it has been noted how many species populations have declined, despite conservation practices working to increase their numbers. The most prevalent impacts affecting fauna populations have come from anthropogenic change in the form of habitat loss and destruction, along with fragmentation, and global climate change. There is a clear need for management practices to now operate on an entire landscape instead …

Theory And Algorithms For Systems Optimization, Vahid Mahmoodian

USF Tampa Graduate Theses and Dissertations

This dissertation presents four sets of contributions in the field of theory and algorithms for system optimization. In the first set, we introduce a simulation optimization method for redistributing bikes in a free-floating bike sharing system. The second set of contributions is a framework for batching queries in large databases to optimize the data retrieval time. The third set includes two branch-and-bound algorithms to solve minimum multiplicative programming problems and one branch-and-bound algorithm to solve the maximum form of the mentioned problems. At last, the fourth set presents an approach to fairlyassign delivery tasks in an outsourcing last-mile delivery system …

Successful Leadership Through Rapid, Unplanned Change, Robert "Darin" Grimm

USF Tampa Graduate Theses and Dissertations

The studies of leadership and leadership models are voluminous, as is the work onchange within organizations. While scores of information can be found on each of these topics, the combination of the two is less ubiquitous. The grouping of specific leadership models related to corporate changes, be it structural or operational, provides an opportunity for new knowledge. Notably, the literature is scant when the added variable of rapid unplanned change is included in the combination of leadership and change. This study sought to better understand the impact of specific leadership behaviors and the impact on an organization during rapid, unplanned …

Cool Under Fire: Psychopathic Traits And Decision-Making In Law Enforcement-Oriented Populations, Sean J. Mckinley

USF Tampa Graduate Theses and Dissertations

Law enforcement is an occupation that is typically characterized by high stress, physical danger, and potential for use of excessive force to subdue suspects of criminal activity. Compared to other jobs, the law enforcement profession is considered a high-stakes occupation that has the potential to greatly impact public safety, and officers must face daily dangers not experienced in other professions. While much research has focused on traditional models of personality and police performance (i.e., Big Five traits; Schneider, 2002; Twersky-Glasner, 2005), there may be utility in examining police officer performance through the lens of the triarchic psychopathy domains (Patrick, Fowles, …

Testing The Congruence Of Espousals And Enactments Predicting Team Innovation, Rylan M. Charlton

USF Tampa Graduate Theses and Dissertations

This study employs a social identity perspective (Hogg, 2008) to test whether perceptions of both espoused and enacted values drive team innovation, and tests whether both their level and congruence determine their impact on innovation. This relationship is tested in a multilevel latent polynomial regression model (MLPM) framework (Zyphur, Zammuto, & Zhang, 2016). The study also leverages block variable procedures (e.g., Edwards & Cable, 2009) to model the combined effects of espoused and enacted values, and tests whether these combined effects mediate between leader behavior and team innovation. This represents the first test of Zohar and Hofmann’s (2012) proposition that …

Using Developmental Evaluation For Clinical Faculty Development In A New Academic Consortium, Candice Kunkle

USF Tampa Graduate Theses and Dissertations

This study aims to support the development of the series, particularly this evaluation study addresses the faculty development program within a newly formed academic partnership between teaching and community physicians. The evaluation addresses the opportunities, assets, and strengthens in the programming while constructing it for the intended users. While this study supports the evolution of the new program, it jointly enhances the collective’s efforts and innovative initiatives within a new academic partnership among leaders and clinical faculty through its ongoing development. The learning and actions derived from the assessments were guided by analysis from needs assessments and interviews as part …

Internship And Job Acquisition Experiences Of Veterans In A Graduate Cybersecurity Degree Program, Stephen P. Gary

USF Tampa Graduate Theses and Dissertations

My purpose in this qualitative inquiry was to explore how student veterans experience cybersecurity internships and job acquisitions. I chose Schlossberg’s individual transition theory viewed through a constructivist lens to support the inquiry. Five participants, who completed graduate cybersecurity internships and acquired cybersecurity positions, provided responses. I employed semi-structured interviews to collect data from the participants. I engaged reflexive thematic analysis to guide my data analysis. Based on my analysis, I generated the following discoveries applicable to the inquiry: (a) opportunities for developing practical experience are regarded as essential for successful participation in an internship; (b) a flexible internship program …

Microbial Dark Matter: Culturing The Uncultured In Search Of Novel Chemotaxonomy, Sarah J. Kennedy

USF Tampa Graduate Theses and Dissertations

Although <1% of environmental isolates can be cultured, insights into the culturable fraction refine future techniques to unlock the cryptic biodiversity. This cryptic biodiversity is omnipresent within culture-independent surveys of environmental bacterial populations. Subsequently, these elusive organisms are termed “microbial dark matter” due to the intrigue surrounding their potential taxonomic and biosynthetic impacts. To this end of investigating bacterial-specific dark matter, we employed high-throughput culturing techniques to examine Gulf of Mexico sediments and sponges for chemotaxonomically important bacteria. Through stepwise implementation of permissive and selective recovery techniques, we succeeded in recovering over 150 unique bacterial isolates. We observed several isolates that pose as chemotaxonomically interesting, including several strains that belong to critical bioremediation taxa. In addition to these biotechnological-amenable isolates, we have also succeeded in culturing taxa historically attributed with antibacterial discoveries. One such isolate was a previously sponge-associated organism belonging to the rarely cultured Verrucosispora genus. Through extensive comparative genomics, we identified it as a novel species and subsequently named it Verrucosispora sioxanthis sp. nov. with the published genome serving as a resource for continued microbial dark matter investigations. Following continued passaging of the organism, we observed improved growth, biomass, and liquid growth dispersal within each increasingly sub-passaged generation of the isolate. As such, the laboratory attenuation, or domestication, of the organism warranted in-depth whole genomic analyses to generate insight into the increased laboratory sustainability. Through phenotypically-guided bioinformatics, we determined that the domestication was mediated through genome-wide selective pseudo- or non-pseudogenization of genes. As the previously sponge-associated organism evolved with the selection pressures of the static laboratory, we demonstrate that isolate effectively underwent genomic atrophy to resolve into a largely stable, sustainable laboratory-domesticated strain. Collectively, our chemotaxonomic discovery pipeline expands on the culturable bacterial biodiversity and ultimately provides a previously uncultured model organism for initial forays into resolving the microbial dark matter knowledge gap.

Online Perceptions Of Panamanian Prisons And Incarcerated Persons: An Analysis Of Youtube User Comments, Mahaleth J. Sotelo

USF Tampa Graduate Theses and Dissertations

The purpose of this study is to explore and understand the frameworks in which prisons and incarcerated persons are discussed amongst commenters under YouTube videos displaying media on Panamanian prisons. The study incorporates a mixed methods approach by conducting a general content analysis of YouTuber comments to address themes within the discussion. Additionally, these themes were quantified and modeled using predictive variables collected such as number of comment likes, number of comment dislikes, and number of comment replies, alias type (screen name or name-like), presence of profile picture, and profile picture type. The themes found were 1) punitive, 2) justifying …

Mobile Response Teams And The Youth Emergency Behavioral Health System, Paige J. Alitz

USF Tampa Graduate Theses and Dissertations

Introduction: This dissertation includes three separate manuscripts that coalesce under the shared topic of mobile crisis response and the emergency behavioral health system. Method: The first manuscript includes a synthesis of the research on mobile crisis response from the 1960s to present day to assess whether mobile crisis services can improve mental health care access in the U.S. for youth and adults. The second manuscript includes bivariate and multivariate analyses of MRT participant data to characterize participants who receive an involuntary psychiatric evaluation versus those who do not, and to assess factors associated with involuntary psychiatric evaluation or referral to …

The Use Of Video Games In Teaching Efl Students To Write Arguments, Dalal Boland

USF Tampa Graduate Theses and Dissertations

This study aims to investigate how playing an online digital video game, Quandary, during a university writing course affect the quality of argumentative writing produced by adult EFL students in Kuwait and how playing the same video game is different between male and female adult EFL students when learning how to write argumentative essays. The sample of the study consisted of 42 students who were enrolled in English composition 2 at Gulf University for Science and Technology, Kuwait. The students were divided to control and experimental group and were part of the study for 3 weeks. Students in the control …

An Ecology Of Learning: Secondary Mathematics Teacher Candidate Learning While Co-Teaching In Early Clinical Practice, Cynthia A. Castro-Minnehan

USF Tampa Graduate Theses and Dissertations

Researchers have called for more empirical research exploring better ways to organize clinical practice around teacher candidate (TC) learning and the coursework-fieldwork gap. This study responds to their call by exploring secondary mathematics TC learning in early clinical placements that use co-teaching. Further, this study views co-teaching in clinical practice through the lens of an activity system. An activity system conceptualizes co-teaching in clinical practice as a complex learning environment or a learning ecology. This study uses a convergent mixed methods design. Findings reveal evidence of TC learning of eight key practices associated with co-teaching in their early clinical placements. …

Investigation Of An Alternative Protocol For The Production Of Sars-Cov-2 Antigenic Proteins, Nichole Ninaltowski

USF Tampa Graduate Theses and Dissertations

With the COVID-19 pandemic showing no signs of slowing down, large-scale antigenic protein production is still needed for surveillance using serologic assays. From screening to vaccines to biotherapeutics, being able to produce the proteins for these assays is essential; however, the current gold standard method for producing SARS-CoV-2 spike proteins is prohibitively expensive for most research groups.

Alternative methods of transfecting mammalian cells to produce recombinant proteins that are relatively inexpensive have been used for years. Unlike the expensive, commercially available lipid-based methods, other established methods such as polyethyleneimine (PEI), are considerably easier, and cheaper to meet the needs of …

Community Assessment Of Water Perceptions And Household Point-Of-Use Treatment Methods In Madagascar, Isabella Rose Silverman

USF Tampa Graduate Theses and Dissertations

One in four people around the world do not have access to safe drinking water, which means that two billion people globally lack access. In high-income countries, 0.02% of yearly deaths are attributed to unsafe water sources; however, an alarming 10.6% of deaths occur in Madagascar, for the same reason.

To achieve Sustainable Development Goal 6: Ensure access to water and sanitation for all, a collaboration between public health and engineering is critical. Within the public health sector, social marketing is commonly utilized to address a problem by using commercial marketing principles to change behavior for the good of society. …

Laboratory Examination Of Lead Weights Harvested From Pitcher Pumps In Eastern Madagascar, Madelyn Wilson

USF Tampa Graduate Theses and Dissertations

Previous sampling campaigns in Tamatave, Madagascar, conducted by the University of South Florida (USF) have identified lead contamination in drinking water sourced from self-supply pitcher pumps. The pitcher pump piston and foot valves were identified as the primary source of lead contamination since they are often manufactured from recycled lead acid batteries. The previous field sampling technique consisted of collecting an aliquot of a 10-15-liter composite sample from the pitcher pump for dissolved lead analysis; however, this technique (1) neglects the contribution of particulate lead, (2) does not properly account for the effects of water stagnation inside the pitcher pump …